Thread: ZF Torque capacity

610, it will break. Why not use a A727 torqueflyte? They are fitted to 1984/5 RRC, bolts straight up to the LT230, and no mods req for those torque numbers.

JC

if the engine will make 610Nm its going to come down to your TC selection.

IMHO the ZF22 is about on its limits with 500Nm coming off of the crank with the standard range of torque converters.

If you were to put in a low stall low multiplication TC and set the box up to lock the TC Lock up clutch earlier on you might getaway with it.

Originally Posted by justinc

610, it will break. Why not use a A727 torqueflyte? They are fitted to 1984/5 RRC, bolts straight up to the LT230, and no mods req for those torque numbers.

JC

Or one of the Ritters C 4/9 LT 95 conversions circa 1980. Bolt straight up to a 351 with Ford bellhousing. There are a few around atm. Have one behind a 350 and all is good.

cheers, DL

The ZF4HP22 and ZF4HP22EH is rated by ZF to 380Nm, the ZF4HP24EH is rated by ZF to about 480-490NM

Originally Posted by 350RRC

Or one of the Ritters C 4/9 LT 95 conversions circa 1980. Bolt straight up to a 351 with Ford bellhousing. There are a few around atm. Have one behind a 350 and all is good.

cheers, DL

Good idea, but the transfer case thrust washers are a problem then in the LT95 Nothing a Taper roller set won't fix

JC

Originally Posted by justinc

Good idea, but the transfer case thrust washers are a problem then in the LT95 Nothing a Taper roller set won't fix

JC

Tapered roller set would be nice one day. The stock LT 95 that came with my POS had done at least 300,000 with the 350 in front of it before I put the Ritters combo in. Including driving 1000+ k's with the centre diff locked accidentally. Was still ok when I pulled it out.

cheers, DL

Thanks Lads,

Ok, I want to stay with a 4 spd auto.
What diameter converter does/can the ZF use?
What determines converter lock with this hyd box?
Anyone in the Perth area got an old ZF kickin around that I can play with?....
If not to build stronger I can at least check the dimensions and see if I can adapt a Ford 4 spd auto to the transfer?

Pete.

Hi,

If you really want a strong 4 speed and have bucks have a look around this site at the 4L boxes and options:

Wholesale Automatic Transmissions

I find a 3 speed (that can be bullet proofed / rebuilt for under a grand) just fine in my POS. Bigger motors don't need as many ratios, but each to their own.

cheers, DL